1-45331810-G-C

Position:

chr1-45331810-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001048174.2(MUTYH):c.953C>G(p.Ser318Trp) variant causes a missense change. The variant allele was found at a frequency of 0.000036 in 1,609,824 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S318L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000038 ( 0 hom. )

Consequence

MUTYH
NM_001048174.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:11

Conservation

PhyloP100: 4.70

Variant links:

Genes affected

MUTYH (HGNC:7527): (mutY DNA glycosylase) This gene encodes a DNA glycosylase involved in oxidative DNA damage repair. The enzyme excises adenine bases from the DNA backbone at sites where adenine is inappropriately paired with guanine, cytosine, or 8-oxo-7,8-dihydroguanine, a major oxidatively damaged DNA lesion. The protein is localized to the nucleus and mitochondria. This gene product is thought to play a role in signaling apoptosis by the introduction of single-strand breaks following oxidative damage. Mutations in this gene result in heritable predisposition to colorectal cancer, termed MUTYH-associated polyposis (MAP). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2017]

MUTYH links:

ENSG00000288208 (HGNC:):

ENSG00000288208 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MUTYH	NM_001048174.2 linkuse as main transcript	c.953C>G	p.Ser318Trp	missense_variant	12/16	ENST00000456914.7	NP_001041639.1	Q9UIF7-6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MUTYH	ENST00000456914.7 linkuse as main transcript	c.953C>G	p.Ser318Trp	missense_variant	12/16	1	NM_001048174.2	ENSP00000407590.2		Q9UIF7-6
ENSG00000288208	ENST00000671898.1 linkuse as main transcript	n.1541C>G		non_coding_transcript_exon_variant	16/21			ENSP00000499896.1		A0A5F9ZGZ0

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000248

AC:

AN:

241834

Hom.:

AF XY:

0.0000152

AC XY:

AN XY:

131198

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000461

Gnomad OTH exome

AF:

0.000170

GnomAD4 exome

AF:

0.0000377

AC:

AN:

1457588

Hom.:

Cov.:

AF XY:

0.0000331

AC XY:

AN XY:

724770

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.0000227

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000459

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152236

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Familial adenomatous polyposis 2

Uncertain:5

Uncertain significance, criteria provided, single submitter	clinical testing	St. Jude Molecular Pathology, St. Jude Children's Research Hospital	Jul 25, 2023	The MUTYH c.1037C>G (p.Ser346Trp) missense change has a maximum subpopulation frequency of 0.0046% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). The in silico tool REVEL predicts a benign effect on protein function, but to our knowledge this prediction has not been confirmed by functional studies. This variant has been reported in 1 of 503 male breast cancer patients who were negative for alterations in BRCA1/2 (PMID: 30564557). To our knowledge, this variant has not been reported in individuals with MUTYH-associated polyposis. In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Oct 27, 2023	This missense variant replaces serine with tryptophan at codon 346 of the MUTYH protein. Computational prediction tool suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <=0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with male breast cancer (PMID: 30564557). In a large international case-control study, this variant was reported in 1/60466 breast cancer cases and 4/53461 controls (PMID: 33471991). This variant has been identified in 6/241834 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Baylor Genetics	Feb 01, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 24, 2024	This sequence change replaces serine, which is neutral and polar, with tryptophan, which is neutral and slightly polar, at codon 346 of the MUTYH protein (p.Ser346Trp). This variant is present in population databases (rs587778538, gnomAD 0.006%). This missense change has been observed in individual(s) with breast cancer (PMID: 30564557). ClinVar contains an entry for this variant (Variation ID: 185982). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Counsyl	Jun 27, 2017	- -

Hereditary cancer-predisposing syndrome

Uncertain:3

Uncertain significance, criteria provided, single submitter	curation	Sema4, Sema4	Sep 25, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Nov 08, 2022	This missense variant replaces serine with tryptophan at codon 346 of the MUTYH protein. Computational prediction tool suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with male breast cancer (PMID: 30564557). In a large international case-control study, this variant was reported in 1/60466 breast cancer cases and 4/53461 controls (PMID: 33471991). This variant has been identified in 6/241834 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Jan 18, 2023	The p.S346W variant (also known as c.1037C>G), located in coding exon 12 of the MUTYH gene, results from a C to G substitution at nucleotide position 1037. The serine at codon 346 is replaced by tryptophan, an amino acid with highly dissimilar properties. This alteration was detected in 1/503 male breast cancer patients who had previously tested negative for BRCA1/2 mutations (Rizzolo P et al. Front Oncol, 2018 Dec;8:583). This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Jun 27, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Oct 17, 2018	Not observed at a significant frequency in large population cohorts (Lek 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function -

Gastric cancer;C3272841:Familial adenomatous polyposis 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Mar 15, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.33

.;.;.;.;.;T;.;.;.;T;.

Eigen

Uncertain

0.30

Eigen_PC

Benign

0.18

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.92

.;D;.;D;D;D;D;D;D;D;D

M_CAP

Benign

0.025

MetaRNN

Uncertain

0.43

T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Uncertain

2.6

.;.;.;.;.;M;.;.;.;.;.

PrimateAI

Benign

0.27

PROVEAN

Uncertain

-3.1

D;D;D;D;D;D;D;D;D;.;D

REVEL

Benign

0.18

Sift

Uncertain

0.0020

D;D;D;D;D;D;D;D;D;.;D

Sift4G

Uncertain

0.0040

D;D;D;D;D;D;D;D;D;D;D

Polyphen

1.0, 1.0, 0.99

.;.;.;.;.;D;D;.;D;.;.

Vest4

0.38

MVP

0.73

MPC

0.52

ClinPred

0.70

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.33

gMVP

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over